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{{Short description|Baseball statistic}}
{{lowercase}}
In [[baseball]], '''wOBA''' (or weighted on-base average)<ref>{{Cite web|url=https://www.fangraphs.com/blogs/the-language-of-fangraphs/|title=The Language Of Fangraphs {{!}} FanGraphs Baseball|date=11 January 2010 |access-date=2018-12-07}}</ref> is a statistic, based on [[Linear regression|linear weights]],<ref>{{cite web|url=https://www.fangraphs.com/library/principles/linear-weights/|title=Linear Weights - FanGraphs Sabermetrics Library|website=www.fangraphs.com}}</ref> designed to measure a player's overall offensive contributions per plate appearance. It is formed from taking the observed run values of various offensive events, dividing by a player's plate appearances, and scaling the result to be on the same scale as [[on-base percentage]]. Unlike statistics like [[On-base plus slugging|OPS]], wOBA attempts to assign the proper value for each type of hitting event. It was created by [[Tom Tango]] and his coauthors for ''The Book: Playing the Percentages in Baseball''.<ref name="thebook">{{cite web|url=http://www.insidethebook.com/woba.shtml|title=wOBA - Weighted On Base Average|website=www.insidethebook.com}}</ref>
== Usage ==
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Balls hit hard (i.e. with a high [[exit velocity]]) in the [[sweet spot (sports)|sweet spot]] produce higher wOBA.<ref>{{cite news|first=Ben|last=Clemens|title=A Sweet Spot by Any Other Definition|date=February 25, 2020|work=FanGraphs|url=https://blogs.fangraphs.com/a-sweet-spot-by-any-other-definition/|access-date=March 14, 2024}}</ref>
== Historical
Coefficients for each tracked outcome vary by year. A historical record of these coefficients can be found at FanGraphs.<ref name=":0" />
=== 2023
Per [[Fangraphs]], the formula for wOBA in the 2023 season was:<ref name=":0" />
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* ''HBP'' = ''[[Hit by pitch]]''
===
The formula below appeared in ''The Book.''<ref>{{Cite book |last=Tango, Tom M. |url=https://www.worldcat.org/oclc/919473395 |title=The book : playing the percentages in baseball |others=Lichtman, Mitchel G., Dolphin, Andrew E. |date=28 April 2014 |isbn=978-1-4942-6017-0 |location=[Place of publication not identified] |oclc=919473395}}</ref>
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